Thanks! As regards the frame rate, honestly I don't know how I could fix it, I'm not enough competent! But I'll ask to someone more experienced than me! However, what is the most evident fault of the frame rate in your opinion? I ask you because I barely know what is the frame rate, so I'd like to learn something more about it!
It's hard to explain it (without using technical terms) but essentially it's what causes the motion blur when the ball (and the players) move - the faint colour that sort of trail behind them after they've moved.